Simulation of Composite Steel Building Exposed to Fire | ||
| The International Conference on Civil and Architecture Engineering | ||
| Article 29, Volume 9, 9th International Conference on Civil and Architecture Engineering, May 2012, Pages 1-21 PDF (1.11 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iccae.2012.44264 | ||
| Author | ||
| Sanad, Abdel Moniem | ||
| Associate Professor and Chairman of Construction and Building Eng. Dept., Arab Academy for Science and Technology and Maritime Transport , Cairo. | ||
| Abstract | ||
| Abstract The behaviour of composite steel structures during fire is a fundamental criterion for the global stability and durability of these structures. Following several fire disasters, the assessment of structures stability and behaviour of individual elements have been the focus of many research projects in fire safety over the last two decades. Full scale experimental works and finite element modelling developed by Sanad et al. were carried to understand the effect of fire on composite buildings. In full scale buildings, slabs, beams and col umns behave in different ways and depend on the strength, duration and variation of heating regime with time and space. Recent researches showed that the behaviour of indeterminate beams under fire is dominated by thermal expansion and changes drastically from its behaviour under ambient condition. However, in composite structures, the reinforced concrete slab acts together with steel beams to provide the needed bending capacity for carrying the applied loads. During real fire, the different conductivity of concrete and steel creates huge difference of temperature between the two elements. Their behaviour at high temperature varies from ambient conditions and the role of composite action in transferring the applied loads changes accordingly. In this paper, a numerical model for composite floor during fire is developed using finite element program ABAQUS. It is validated against full scale fire test, with the ultimate objective of investigating the behaviour and contribution of steel beam and concrete slab to the global stability of the composite structure during fire. Both the obtained numerical and experimental results are in good agreement and the model proposed in this paper can predict with acceptable accuracy the global behaviour of the structure under fire. | ||
| Keywords | ||
| Finite Element Analysis; Real Fire Conditions; Composite Floor; Reinforce Concrete Slab; Steel Joist | ||
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